Answer:
A B = {x | x < 5}
Step-by-step explanation:
The domain of A B will be given by {x | x < 5}
The domain of A is given as {x | x < 5} while that of B is {x | x ≤ 7}. From this we can infer that the domain of A is a subset of B since A is contained in B. The domain of A B is simply the intersection of these two sets which is A.
